Submission #307683

#	Time	Username	Problem	Language	Result	Execution time	Memory
307683		kylych03	Boxes with souvenirs (IOI15_boxes)	C++14	20 / 100	1 ms	384 KiB

boxes

#include <bits/stdc++.h>
#include "boxes.h"
//#include "grader.cpp"
using namespace std;
long long delivery(int N, int K, int L, int p[]) {
    sort(p, p+N);
    vector <long long > a,b;

    for(int  i = 0; i < N; i++){
        if(p[i] <= L/2)
            a.push_back(p[i]);
        else
            b.push_back(L-p[i]);
    }
    sort(b.begin(), b.end());
    long long res = 0;

    for(int  i = 0 ; i < a.size();i++){

        if((i+1)% K == 0)
            res += (a[i] * 2);
    }
    for(int  i = 0 ; i < b.size();i++)
        if((i+1)%K == 0)
            res+=(b[i] * 2);

    if(a.size()%K !=0)
        res+=(a[a.size() - 1] * 2);

    if(b.size()%K!=0)
        res+=( b[b.size() - 1] * 2);
    long long res1 = L;
    while(K--) {
        if(a.size()==0 && b.size()==0)
            break;
        if(a.size()==0){
            b.pop_back();
            continue;
        }

        if(b.size()==0){
            a.pop_back();
            continue;
        }
        if(a.back() > b.back())
            a.pop_back();
        else
            b.pop_back();
    }
    for(int  i = 0 ; i < a.size();i++){

        if((i+1)% K == 0)
            res1 += (a[i] * 2);
    }
    for(int  i = 0 ; i < b.size();i++)
        if((i+1)%K == 0)
            res1+=(b[i] * 2);

    if(a.size()%K !=0)
        res1+=(a[a.size() - 1] * 2);

    if(b.size()%K!=0)
        res1+=( b[b.size() - 1] * 2);
    if(res1 < res)
        res= res1;
    return res;
}

Compilation message (stderr)

boxes.cpp: In function 'long long int delivery(int, int, int, int*)':
boxes.cpp:18:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   18 |     for(int  i = 0 ; i < a.size();i++){
      |                      ~~^~~~~~~~~~
boxes.cpp:23:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |     for(int  i = 0 ; i < b.size();i++)
      |                      ~~^~~~~~~~~~
boxes.cpp:50:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   50 |     for(int  i = 0 ; i < a.size();i++){
      |                      ~~^~~~~~~~~~
boxes.cpp:55:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   55 |     for(int  i = 0 ; i < b.size();i++)
      |                      ~~^~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 0 / 15
• Subtask 4: 0 / 15
• Subtask 5: 0 / 20
• Subtask 6: 0 / 30